
# encoding:utf-8
from PIL import Image,ImageDraw,ImageFont,ImageFilter
import random

def draw(code,tl=(15,2),font_size=23,img_size=(100,30),bg=(255,255,255),fg=(0,0,255),mode='RGB'):
    img =Image.new(mode=mode,size=img_size,color=bg)
    #img=img.rotate(60)
    painter = ImageDraw.Draw(img)
    font = ImageFont.truetype(font='arial.ttf',size=font_size)
    
    painter.text(tl,code,font=font,fill=fg)
    #img=img.rotate(-60)
    return img

#def rotate(img):
    #rot = img.rotate(random.randint(-10,10),expand=0) #默认为0，表示剪裁掉伸到画板外面的部分
    #fff = Image.new('RGBA',rot.size,(255,)*4)
    #img = Image.composite(rot,fff,rot)
    #return img

def create_lines(img,n_line=(1, 4)):
    '''绘制干扰线'''
    draw=ImageDraw.Draw(img)
    size= img.size
    line_num = random.randint(*n_line) # 干扰线条数
    for i in range(line_num):
        # 起始点
        begin = (random.randint(0, size[0]), random.randint(0, size[1]))
        #结束点
        end = (random.randint(0, size[0]), random.randint(0, size[1]))
        draw.line([begin, end], fill=(0, 0, 0))
    return img

def create_points(img,point_chance=5):
    '''绘制干扰点'''
    chance = min(100, max(0, int(point_chance))) # 大小限制在[0, 100]
    draw=ImageDraw.Draw(img)
    width,height= img.size
    for w in range(width):
        for h in range(height):
            tmp = random.randint(0, 100)
            if tmp > 100 - chance:
                draw.point((w, h), fill=(0, 0, 0))
    return img

def tort(img):
    # 图形扭曲参数
    params = [1 - float(random.randint(1, 2)) / 100,
              0,
              0,
              0,
              1 - float(random.randint(1, 10)) / 100,
              float(random.randint(1, 2)) / 500,
              0.001,
              float(random.randint(1, 2)) / 500
              ]
    img = img.transform(img.size, Image.PERSPECTIVE, params) # 创建扭曲  
    img = img.filter(ImageFilter.EDGE_ENHANCE_MORE) # 滤镜，边界加强（阈值更大）
    return img

img = draw('A42k')
img=create_lines(img)
img=create_points(img)
img=tort(img)
#img=rotate(img)
img.show()
print('here')


import random
from PIL import Image, ImageDraw, ImageFont, ImageFilter
_letter_cases = "abcdefghjkmnpqrstuvwxy" # 小写字母，取出干扰
_upper_cases = _letter_cases.upper() # 大写字母
_numbers = ''.join(map(str, range(3, 10))) # 数字
init_chars = ''.join((_letter_cases, _upper_cases, _numbers))
def create_validate_code(size=(120, 30),
                         chars=init_chars,
                         img_type="GIF",
                         mode="RGB",
                         bg_color=(255, 255, 255),
                         fg_color=(0, 0, 255),
                         font_size=18,
                         font_type="kk.TTF",
                         length=4,
                         draw_lines=True,
                         n_line=(1, 2),
                         draw_points=True,
                         point_chance = 2):
    '''
    @todo: 生成验证码图片
    @param size: 图片的大小，格式（宽，高），默认为(120, 30)
    @param chars: 允许的字符集合，格式字符串
    @param img_type: 图片保存的格式，默认为GIF，可选的为GIF，JPEG，TIFF，PNG
    @param mode: 图片模式，默认为RGB
    @param bg_color: 背景颜色，默认为白色
    @param fg_color: 前景色，验证码字符颜色，默认为蓝色#0000FF
    @param font_size: 验证码字体大小
    @param font_type: 验证码字体，默认为 ae_AlArabiya.ttf
    @param length: 验证码字符个数
    @param draw_lines: 是否划干扰线
    @param n_lines: 干扰线的条数范围，格式元组，默认为(1, 2)，只有draw_lines为True时有效
    @param draw_points: 是否画干扰点
    @param point_chance: 干扰点出现的概率，大小范围[0, 100]
    @return: [0]: PIL Image实例
    @return: [1]: 验证码图片中的字符串
    '''
    width, height = size # 宽， 高
    img = Image.new(mode, size, bg_color) # 创建图形
    draw = ImageDraw.Draw(img) # 创建画笔
    def get_chars():
        '''生成给定长度的字符串，返回列表格式'''
        return random.sample(chars, length)
    def create_lines():
        '''绘制干扰线'''
        line_num = random.randint(*n_line) # 干扰线条数
        for i in range(line_num):
            # 起始点
            begin = (random.randint(0, size[0]), random.randint(0, size[1]))
            #结束点
            end = (random.randint(0, size[0]), random.randint(0, size[1]))
            draw.line([begin, end], fill=(0, 0, 0))
    def create_points():
        '''绘制干扰点'''
        chance = min(100, max(0, int(point_chance))) # 大小限制在[0, 100]

        for w in range(width):
            for h in range(height):
                tmp = random.randint(0, 100)
                if tmp > 100 - chance:
                    draw.point((w, h), fill=(0, 0, 0))
    def create_strs():
        '''绘制验证码字符'''
        c_chars = get_chars()
        strs = ' %s ' % ' '.join(c_chars) # 每个字符前后以空格隔开

        font = ImageFont.truetype(font_type, font_size)
        font_width, font_height = font.getsize(strs)
        draw.text(((width - font_width) / 3, (height - font_height) / 3),
                  strs, font=font, fill=fg_color)

        return ''.join(c_chars)
    if draw_lines:
        create_lines()
    if draw_points:
        create_points()
    strs = create_strs()
    # 图形扭曲参数
    params = [1 - float(random.randint(1, 2)) / 100,
              0,
              0,
              0,
              1 - float(random.randint(1, 10)) / 100,
              float(random.randint(1, 2)) / 500,
              0.001,
              float(random.randint(1, 2)) / 500
              ]
    img = img.transform(size, Image.PERSPECTIVE, params) # 创建扭曲
    img = img.filter(ImageFilter.EDGE_ENHANCE_MORE) # 滤镜，边界加强（阈值更大）
    return img, strs
if __name__ == "__main__":
    code_img = create_validate_code()
    code_img[0].show()
    #code_img[0].save("xiaorui.cc.gif", "GIF")